一种新型模拟电感  

A New Simulated Electric Inductance

作　　者：卢孟夏[1] 

机构地区：[1]北京联合大学信息学院

出　　处：《北京联合大学学报》1999年第1期78-81,共4页Journal of Beijing Union University

摘　　要：在有源滤波器的设计中经常采用通用阻抗变换器（ＧＩＣ）模拟接地电感来实现有源滤波器，然而由于所采用的运放较多，存在消耗功率大和噪声问题，此外元件变化引起滤波器特性的变化大，其稳定性不如ＬＣ滤波器。由此提出了一种新型模拟电感电路。它只由一个运放和电阻电容组成，由这种新型模拟电感代替无源ＬＣ滤波器中的电感Ｌ组成亚音频有源高通滤波器，具有与无源ＬＣ滤波器相同的低灵敏度，并且电路简单经济、减小功率消耗和噪声。在低频和亚音低频范围具有实用价值。Source filter is commonly composed of general impedance changer that simulates the grounded inductance It needs a few operational amplifiers,therefore,it consumes much energy and exists a great deal of noise In addition,the change for parts of source filters would be cause much change of filter characteristic,and the stability of it is not better than that of LC filter So a new simulated electric inductance circuit is proposed This circuit is composed of electric resistance,electric capacitor and only one operational amplifier Low audio frequency source high pass filter consists of this new inductance circuit that replaces of electric inductance ( L ) of no source (LC) filter The circuit is simple,economical,low noise and little energy consuming It has as same low sensitivity as (LC) filter,and wide practical application in low and low audio frequencies [

关 键 词：模拟电感 灵敏度 LC滤波器 有源滤波器 设计 

分 类 号：TN713.8[电子电信—电路与系统] TN713.1